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Time Zone Converter & Meeting Planner

Pick a date, time and source zone, add the zones your teammates live in, and see everyone's local time with day shifts and business-hours indicators — plus the hours that work for the whole group. DST-aware, runs in your browser.

About this tool

All conversions use the browser's built-in Intl time-zone database (the IANA tz database), so daylight-saving transitions and historical offset changes are handled correctly for the exact date you pick. The status column marks 9:00–18:00 local as business hours (green), 7:00–9:00 and 18:00–21:00 as a stretch (amber), and everything else as off-hours (red).

The best-window strip checks each UTC hour of the chosen date against every selected zone and lights up the hours where the whole group is within business or waking hours. Nothing you enter leaves the page.

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Popular time-zone conversions

IST → EST EST → IST IST → CST CST → IST IST → PST PST → IST IST → GMT GMT → IST IST → CET CET → IST IST → JST JST → IST IST → SGT SGT → IST IST → GST GST → IST IST → AEST AEST → IST EST → GMT GMT → EST EST → PST PST → EST EST → CET CET → EST EST → JST JST → EST EST → AEST AEST → EST EST → CST CST → EST PST → GMT GMT → PST PST → JST JST → PST PST → AEST AEST → PST PST → CET CET → PST GMT → CET CET → GMT GMT → JST JST → GMT GMT → SGT SGT → GMT GMT → AEST AEST → GMT GMT → GST GST → GMT

Found this useful? 113 free, browser-only tools by Yuvrajsinh Jadav — an engineer who ships production AI systems. No account, nothing sent anywhere.
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